To make meal menu candidates suitable to a dieter easily presentable at a restaurant, etc.

In a restaurant system equipped with a restaurant terminal device 10 which issues a mean menu ticket in response to a user's meal menu choice, the user has a user terminal 20 which stores his or her food limit conditions and the restaurant terminal device 10 and the user terminal 20 are equipped with communication means which send and receive information to each other. The restaurant terminal device 10 receives the meal limit conditions of the user from the user terminal 20, retrieves meal menus meeting the conditions from a meal menu database, and outputs them to an output means 11 of the restaurant terminal device. Further, when the user selects a specific meal menu, the restaurant terminal device 10 retrieves information matching the meal menu from the meal menu database and outputs it to output means 30 and 40 in a kitchen.